Kathy Mall 2x Black Suction Cup Clip 34mm Diameter for Aquarium Heater Tubing 100% Brand new and high quality ,High quality silicone; Suction cups is in 34mm diameter, 24mm diameter clip,Color: Black ; It can fit the 1/2" diameter aquarium Heater / PVC Tubing / Rain Bar. 2pcs suction cups in one pack Includes : 2x Black Suction Cup Clip